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2025-11-16 - 01:42
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackfslot7.osadl.org (updated Sat Nov 15, 2025 12:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
180335998729,39cyclictest282779-21kworker/2:210:40:072
180340997820,19cyclictest0-21swapper/711:19:217
18034099770,58cyclictest250610-21cat09:10:247
180340997618,39cyclictest326292-21cat11:25:197
180340997618,38cyclictest185687-21unixbench_singl07:15:247
180340997313,20cyclictest0-21swapper/709:30:207
180340997232,19cyclictest364739-21munin-run12:35:017
180340997232,19cyclictest364739-21munin-run12:35:017
180340997214,19cyclictest0-21swapper/711:49:217
180340997213,19cyclictest0-21swapper/707:26:467
180340997133,19cyclictest328621-21fschecks_time11:30:197
180340997011,59cyclictest0-21swapper/711:03:577
180340996911,0cyclictest0-21swapper/707:45:587
180340996810,19cyclictest0-21swapper/710:32:457
180340996810,19cyclictest0-21swapper/707:32:387
18034099679,19cyclictest0-21swapper/710:13:337
18034099679,19cyclictest0-21swapper/707:54:437
180340996627,39cyclictest8750ktimers/711:40:277
180340996527,19cyclictest0-21swapper/707:10:167
180340996423,40cyclictest0-21swapper/711:00:017
18034099625,38cyclictest278877-21ntpq10:00:237
180340996223,21cyclictest0-21swapper/707:24:407
180340996223,20cyclictest0-21swapper/710:27:197
180340996122,22cyclictest0-21swapper/711:05:277
180340996122,19cyclictest0-21swapper/709:58:567
18034099610,59cyclictest215378-21smartctl08:10:167
18033999610,41cyclictest0-21swapper/609:10:166
180340996021,20cyclictest0-21swapper/710:35:437
180340995921,21cyclictest0-21swapper/708:50:367
180340995919,39cyclictest0-21swapper/710:49:217
18034099590,40cyclictest318170-21ntp_states11:10:217
18033499580,19cyclictest0-21swapper/112:35:201
180340995718,39cyclictest308149-21sed10:55:027
180340995718,20cyclictest247651-21python309:05:247
180340995619,19cyclictest0-21swapper/708:57:147
180340995618,38cyclictest244133-21memory09:00:207
180340995517,19cyclictest1089-21snmpd11:57:377
180340995415,19cyclictest0-21swapper/712:37:577
180340995415,0cyclictest0-21swapper/712:25:297
180340995414,40cyclictest0-21swapper/709:53:417
180340995414,39cyclictest0-21swapper/707:55:067
180340995414,19cyclictest0-21swapper/712:15:177
180340995413,40cyclictest0-21swapper/709:45:317
180340995413,40cyclictest0-21swapper/708:20:547
180340995413,39cyclictest0-21swapper/708:16:587
180340995412,42cyclictest0-21swapper/710:22:257
180340995333,20cyclictest0-21swapper/712:02:017
180340995314,39cyclictest0-21swapper/708:05:247
180340995314,19cyclictest0-21swapper/711:39:137
180340995314,19cyclictest0-21swapper/711:24:587
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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